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. 2011 Aug 16;11:90. doi: 10.1186/1471-230X-11-90

Table 1.

Histopathological grading scores

Scores Microscopic findings
0 Normal histological findings
1 Mucosa: villus blunting, loss of crypt architecture,
sparse inflammatory cell infiltration, vacuolization
and edema.
Normal muscular layer
2 Mucosa: villus blunting with fattened and vacuolated cells, crypt necrosis, intense inflammatory cell infiltration, vacuolization and edema
Normal muscular layer
3 Mucosa: villus blunting with fattened and vacuolated cells, crypt necrosis, intense inflammatory cell infiltration, vacuolization and edema
Muscular: edema, vacuolization, sparse neutrophil infiltration